Vehicle-mounted crash attenuator

Abstract

A crash impact attenuator is adapted for deployment on a vehicle, and includes a cartridge portion having at least one energy absorbing module, as well as a backup system having a backup frame, which is adapted to attach the cartridge portion to the vehicle. The backup system includes an actuator configured to pivot the cartridge portion between a deployed orientation and a stored orientation about a pivot axis disposed on a lower half of the backup system. The backup system further includes a lockout frame member having a contact surface on one end thereof, the lockout frame member being actuatable between a deployed orientation wherein the contact surface engages a portion of the backup frame to support the backup frame against vehicular impact forces and a stowed orientation wherein the contact surface is not engaged with the backup frame.

What is claimed is: 
     
       1. A crash impact attenuator adapted for deployment on a vehicle, comprising:
 a cartridge portion comprising at least one energy absorbing module; and 
 a backup system having a backup frame and being adapted to attach the cartridge portion to the vehicle, comprising an actuator configured to pivot the cartridge portion between a deployed orientation and a stored orientation about a pivot axis disposed on a lower half of the backup system, the backup system further comprising a lockout frame member having a contact surface on one end thereof, the lockout frame member being actuatable between a deployed orientation wherein the contact surface engages a portion of the backup frame and a stowed orientation wherein the contact surface is not engaged with the backup frame. 
 
     
     
       2. The crash impact attenuator as recited in  claim 1 , wherein the cartridge portion is horizontal when in its deployed orientation and vertical when in its stowed orientation. 
     
     
       3. The crash impact attenuator as recited in  claim 1 , wherein the lockout frame member is horizontal when in its deployed orientation and vertical when in its stowed orientation. 
     
     
       4. The crash impact attenuator as recited in  claim 1 , wherein the backup frame pivots between a vertical orientation, when the cartridge portion is in its deployed orientation and a horizontal orientation when the cartridge portion is in its stowed orientation. 
     
     
       5. The crash impact attenuator as recited in  claim 1 , wherein the portion of the backup frame contacted by the lockout frame member contact surface is located above the pivot axis. 
     
     
       6. The crash impact attenuator as recited in  claim 1 , wherein the lockout frame member contact surface is adjustable in order to optimize engagement with the backup frame. 
     
     
       7. The crash impact attenuator as recited in  claim 6 , wherein the lockout frame member contact surface comprises an adjustable bolt head. 
     
     
       8. The crash impact attenuator as recited in  claim 1 , and further comprising a second lockout frame member having a second contact surface adapted to engage a second portion of the backup frame. 
     
     
       9. The crash impact attenuator as recited in  claim 1 , wherein the portion of the backup frame contacted by the lockout frame member contact surface is located on an upper half of the backup frame.